package chainresponsibility.p6;
import java.math.BigInteger;
public class UseBigInteger implements Handler {
	private Handler		handler;						// 存放当前处理者后继的Hander接口变量
	private BigInteger	result	= new BigInteger("1");
	public void computeMultiply(String number) {
		try {
			BigInteger n = new BigInteger(number);
			BigInteger ONE = new BigInteger("1");
			BigInteger i = ONE;
			while (i.compareTo(n) <= 0) {
				result = result.multiply(i);
				i = i.add(ONE);
			}
			System.out.println(number + "的阶乘:" + result);
		} catch (NumberFormatException exp) {
			System.out.println(exp.toString());
		}
	}
	public void setNextHandler(Handler handler) {
		this.handler = handler;
	}
}
